* Built-in battery 85 mAh * IP67 waterproof and dustproof (you can wear it in the rain, wash your hands, go rock climbing and other sports, but do not put it in hot water) * Blood pressure monitor and heart rate monitor * Several sport mode * Supports iOS version 9.0 above and Android version 4.4 above * Reminder: call reminders, SMS reminder * More function: time display / clock, no, calories, distance, sleep, camera, on / off display, sleep monitoring (sleep time, sleep quality, stay up late), find the phone and find bracelet, alarm clock / medication / meeting / sedentary / drink reminder, remote controlled camera (shake to take pictures). Note: Portable devices monitor human activities through electronic sensors, and they are at the level of consumer electronics. it is normal for a certain deviation. the user must process the data objectively. Please do not compare to hospital equipment about reading, it's not a medical device! Before using, scan the QR code on the manual to download the app and connect it to the watch with the app.